One question and I hope i am the right place to ask.
How can I use the buttons in the more tag. So,when <!--more--> (i think that is the code) is inserted in the html editor the final result on the blog page would give a button with the text Read on, or whatever I want it to be.

Solved this one, but partially: now the twentyten_auto_excerpt_more( $more ) functions shows the code for the standout button. I see the … (...) and then the text [color-button color="bkgreen" href="http://www.whatever.top/text/"]Lees verder[/color-button] on the search results page. The code is working with the manual inserted <!--more--> tags though.
Any ideas?

Okay, found a workaround for it...
Using twentyten theme and my theme as a child theme

In my theme css I added the referenced classes .sccb-button-... (four entries)
In my theme functions.php I already had a customized read_more function which is referenced in loop.php from the_content() through a parameter and from the auto_excerpt_function in the twentyten theme.

My customized read_more function checks if is_archive or is_search is true and then the returned code is a bit different. This way I have the result I want with a bit less flexibility. I can use this until this plugin works with the auto_excerpt function from the twenty_ten theme.